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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 4 |
| 1967 | 8 |
| 1968 | 26 |
| 1969 | 69 |
| 1970 | 82 |
| 1971 | 122 |
| 1972 | 121 |
| 1973 | 134 |
| 1974 | 149 |
| 1975 | 95 |
| 1976 | 80 |
| 1977 | 116 |
| 1978 | 131 |
| 1979 | 136 |
| 1980 | 109 |
| 1981 | 94 |
| 1982 | 134 |
| 1983 | 190 |
| 1984 | 175 |
| 1985 | 136 |
| 1986 | 174 |
| 1987 | 220 |
| 1988 | 318 |
| 1989 | 382 |
| 1990 | 260 |
| 1991 | 288 |
| 1992 | 304 |
| 1993 | 380 |
| 1994 | 309 |
| 1995 | 308 |
| 1996 | 346 |
| 1997 | 304 |
| 1998 | 329 |
| 1999 | 261 |
| 2000 | 227 |
| 2001 | 276 |
| 2002 | 227 |
| 2003 | 239 |
| 2004 | 249 |
| 2005 | 296 |
| 2006 | 279 |
| 2007 | 351 |
| 2008 | 323 |
| 2009 | 425 |
| 2010 | 393 |
| 2011 | 442 |
| 2012 | 487 |
| 2013 | 609 |
| 2014 | 457 |
| 2015 | 433 |
| 2016 | 395 |
| 2017 | 418 |
| 2018 | 429 |
| 2019 | 361 |
| 2020 | 249 |
| 2021 | 150 |
| 2022 | 22 |
| 2023 | 10 |
| 2024 | 26 |